Bookbinder&#39;s press



July 1, 1930. J. MURRAY BOOKBINDER'S PRESS Filed Juiy 1, 1929 2 Sheets-Sheec 1 I /NVEN TOR Jon/v Maze/w July 1, 1930. I JJVIURRAY 2-BQQKBINDER'S PRESS v Filed July 1, 1929 2 Sheets-Sheet 2 /NVEN TORJau/vMu/eenY Patented July 1930 Jenn MURRAY, or Gawa n-,1 ENGLAND"nooxninnnivs .rnnssaii ncauon fiied u1 1, 1929, Serial No. 375,310, andin Great Britain September 14, 19281"; i

J This invention relates to ;a bookbinders press havingrelatively'movable head and platen elements,- and more particularly topresses. ofthe kind. described, in the prior ,5 specification No.1,527,902 issued 24th February, 1925; The invention has for anob platenwithalte'rnative means-for advancing the platen rapidly or slowly. Inopera tion, the material to. be pressed is placed in position inv the,press and partially com- 7 15 pressed by advancing theplaten rapidly bythrust on a handle carried thereby. The

thrust on the material causes a faceplate yieldingly supported from thefixed head to retire into contact with the fixed headand thus effectengagement of. slow advancing gearing by actuation of which the materialmay be fully. c ompressed. When the ma terial has been tied up, the slowadvancing gearingiis disengaged and the platen retracted to permitremoval of the material.

In accordance with the present invention,

there is provided for moving by power the movable element (say theplaten element) an electric motor operatively connected to the 30 tivein the cycle .of operations of the press. In practice the gearingisdriven by means of a band, chain or thelike from an electric motormounted on a wheeled carriage supporting .thevpress, the current supplyconnections to which motor-areautomatically completed and interrupted'in r the cycle of operations. t In one embodiment of the inventionthere are carried on the underside ofthe press table but insulated.therefrom pair of bus bars extending longitudinally of the. press;

said bus bars beinglincluded in' the motor circuit, and normally bridged.by a brush carried by the movable platen. Attached to the face plate onthe fixed head of the-press is a contact which, when the faceplate isdepressed, and after driving engagement of -0 the gearing hasflbeenefi'ected, electrically to' effect compression of the material.

the motor stopped. The timing of thee-peratlon ofthe trip, device isregulatable by of the material moves the laten rearwardly.

I lars. Further rearward movement of the. gearing and adapted tobe-rendered inopera- .cordance withv the invention is illustrated.inatically 'the means for engaging the planeinterconnects twostationary contact pillars H included in the motorcircuit whereby tostart the motor to propel the platen slowly As in thepriorconstructiomthe platen" i may be rapidly advanced by operation of aa3 handle mounted thereon so that the material is partially compressedto depress the face plate on the fixedhead to effect engagement of thegearing and closure of the motor circuit. f I .12

When the pressure on the material attains a predetermined intensity, afaceplate .resiliently mounted on the platen yields to" the pressureandfin moving releases a trip devicecarried by the platen. so as toeffect di engagement of the brush from the bus bars, the motorcircuitbeing thus interrupted and justment of aset-screw carr-ied by theface f plate on theplaten andco-operatingf'with' the trip device. Whenthe material liasbeen tied up, a release lever is operated to disengage.the gearing, whereupon expansion The faceplate onthe Xed head is thusrelieved and the contact carried therebyis disengaged from thestationary contact pilplaten brings a follower on the trip device sointo engagement with a cam whereby the brush; is restored to position inengagement with the bus bars. I 4.A b'ookbinders press constructed in21C,

in the accompanying drawings in which Fig. lisqaperspective view fromthe rear side of'the press; Fig. 2 is fragmentary longitudi; nal.section Fi'g. 3 afragmentary, inverted plan view of the press table.Fig, 4 is a fragmentary detail view showing diagr.am-.

a ye aa Y The press shownincludes a fixed head 1 and a movable platen 2mounted to perform rectilinear-movements toward or away from thefixedhead 1 on a table 3. eidenotes a rack bar' carried by the platen 2and meshing ,Witha gear pinion 5. 6 (Fig. 1) denotes a handle, carriedby the platen 2.

( supported the rearward travel of the platen with a; from the fixedhead 1. 'As in the construcl ti on,described in the prior specification,the face plate 7 is. operatively connected to atappetyr od 1) serving totrip into '7 denotes a face plate resilientl stationary cam 41.

placed-on the table 3' against the faceplate v7. 1 The platen 2 israpidly advanced by .sun' and-planetaryf gearing en thrust onthe handle6 wherebyto compress f sing so tha ,xVhenthe face the materialbetweenthe jt'aceplates and plate, urged towardsgt e head 1, said ace-plate?retires,the tappet gearing 1s 'operatively connected to the gear. ated,whereby the sun-andi in operatiyely connected 7 Inion and, as the faceplate 7 further retires, the contact 17 interconnects the conta'ctpillars 18, 19 whereby the motor circuit is closed and the motor isbrought into actionto advance the platen further to com- -platen 2; vpress the"materialJAs the -pressure 'ing; e tablet; is supcreases, theplates 25, 26mm the platen are ported onpedesta l; ed to the tablelQpressedt'ogeth'er in oppo'sitionto the action 1 wheeled carriagiproyided with adreiwof "the s'priitlgs 27, 28,28- until; at 'al point 73; Dep ng from the underside of when the requisite pressure hasbeenfattained thetable 12a 11 .electricinotor i t-0f which" asdetermined by thesetting of the set-screw aftis 'op eratively connected.29, said" screw 29 trips the bell-cranklever planetary geatingby meansand enclosd ini a guard Carried by biit in teTis-a contact i As "shown;

brush 38 In'oyesclear of thebns bars 20;22 and interrupts the motorcircuit to arrestthe the lever-lO 'is inani'pulated to disconnect thesun-and -planetary 'gearin'g from the pinion f 5to permit rearwardmovement of the platen by expansionQfl-the 'material. The face p and thecontact 17 disengaged'froin the contact pillars 18, 1-9. On 'furtherrearward movement of-the platen 2* by" operation of the handle '6 tfollower roller 40. engages the stationary cam -41 wherebyi the V trip idevice 30,35 is reset in the positijon in which the brush" 8 engages thebus bars 20, 22,

nected toone pole of the motor'l of whic'h the other" pole is electricaly connected "through a; switch- 21 to one; end iq'fa bus bar "22disp0'sed"parallelpwiththe bus baa-201 but spaced therefrom 24f denote Isupply leadst o car ried by the; V p1aten2i V I whichiand "latenisinterposed aplate '26 spaced platenQ by springsf27 fthe iiace' iplate2'5fbein spaced tromtheplate '26 a j i ng i pri g 2 a interposed-d1- 1.In abookbinders'pre'ss; 'incombinatio'n rectly; between thefac'ef plateand-the with afixed hea'dand moyablepplaten, an platen 2, said springspenetratmg apertures in the plate '26and serving, in the operat on a .ofthe press-, to transmit the major'portlon v ofthe loadon'jthe faceplate25 to the platen Screw-threaded through the[ Ge: plate 25, near ithe'lowen edge there 7 screw 29 gageable ment to saidplaten, current supplyconnece tions", to said motor; a brush movable with said plateir'an dengageable with said con nections, a tripfdeyice' also movable withwiththe} arm 30 of] abfell-crank leverjpivoteda the platen f2 and havinganother a urged? downwardly by a spring: 33

" arm 32 constitutes a latch normally en in -ulrged arm 34Qseci1redto abrush n eans movable with said platen for brush troni said connections,and nieans for resetting said ftripfdevice and said" brush 'in theretnr'n moveinent of-s'a-id plateni l r 524111 bookbinderspress, incombination qface plate yield-ingly suppor ted by sa'i'd'plat: en; anelectric motor" for imparting advance movement tosaid platen; currentsupply connectionsc; said 31013011, a brush engagea'ble "with sai"connections, a trip device opera- H l I a tively related'to saidbrush-and means ad v ting a"switch-deyi'ce. Securedn ,jus'tably 'fittedto said face platef0r actuat the other end of the shaftfidis-a lever 39ing-sai'd'tripdevicetodisengage'said brush carrying .a follower r0ller40'engageable in from 'sai'd c'onnections."

free iendbffwhich l V normally engaging the bus bars 20, electricallyto'finterconnectisaid: nsh'in conjunction -with the 'ar Inoperation, thematerial to be pressed is 30, 32 and releases thejar nfil whereby themoton; When thematerial hasbeen-tiedup,

g now readyv forfa subsequent actuating siaid trip' device to disengagesaid plate 7 is now restored -to; initial positionelectric-motorforiirnparting adyance movesaid platen and operativelyrelate'cl to said 'withafiXedhead and -a movable platen,=a

v 3. In a bookbinderspress, in combination, a fixedhead, a platenmovable towards said head to impart by a' first-stage movement apreliminary pressure to material located between said platen and saidhead, an electric motor for imparting a second-stage movement to saidplaten to impart afinal'pressure to said material, current supplyconnections to said motor, a brush movable with said platen andengageable. with said connections, a'trip device operatively related tosaid brush, pressure-operated means for actuating saidtrip device todisengage said brush from said connections, and means for resetting saidtrip device and'said brush.

4; In a bookbinders press, in combination, a fixed head, a platenmovable towards said head to impart by a first-stage movement apreliminary pressure to material located between said platen andsaidhead, an electric motor, atraln of gearing through which asecond-stage movement is imparted to said platen by said motor, currentsupply con- I nections to said motor, a brush movable with said platenand engageable with said connections', a trip device also movable withsa d platen, means for actuating-said trip device to disengage saidbrush from said connec tionson attainment of a predetermined maximumpressure on said material, and means for resetting said trip device andsaid brush.

5. In abookbinders press, in combination,

a fixed head, a platen movable towards said .head to impart by afirst-stage movement a preliminary pressure to material located between,said platen and said head, an electricmotor, a train of connectionsthrough which a second-stage movement is imparted to said platen by saidmotor, said train including a rack and pinion and slow motion gearingoperatively connectible to said pinion, a manually operable tappet rodto effectoperative connection of said gearing with said pinion, currentsupply connections to said motor, a brush movable with said platen andengageable with said connections, means for startlng said motor whensaid gearing is connected to said pinion,a trip device movable with isaid platen and operatively related to said brush, means for actuatingsaid trip device to disengage said brush from said connections onattainment of a'predetermined maximum pressure on said material andmeans for resetting said trip device and said brush.

In testimony whereof I have/signed my name to this specification.

JOHN MURRAY.

